Pipeline port hysteresis buffer demagnetizer

Abstract

The invention discloses a pipeline port hysteresis buffer demagnetizer and relates to the technical field of pipeline systems. The pipeline port hysteresis buffer demagnetizer mainly comprises a silicon-controlled voltage pre-stabilizing circuit, an inversion main control circuit, a rectifier, a regulator, a magnetic field detection module, a display panel, a protection circuit and demagnetization coils, wherein a power supply from a power grid is connected with the silicon-controlled voltage pre-stabilizing circuit; the output of the silicon-controlled voltage pre-stabilizing circuit is connected with the inversion main control circuit, the manual regulation output which is connected with the display panel is also connected with the inversion main control circuit, the output, which is connected with the output of detection probe, of the magnetic field detection module is connected with the inversion main control circuit; the output of the inversion main control circuit is connected with the rectifier; the rectifier has three paths of outputs: one of three paths of output of the rectifier is connected with the protection circuit, and the output of the protection circuit is connected with the silicon-controlled voltage pre-stabilizing circuit and the inversion main control circuit; one path of output of the rectifier is connected with the display panel; and another path of output of the rectifier is connected to the demagnetization coils (1 and 2). Compared with the conventional demagnetization product, the pipeline port hysteresis buffer demagnetizer has the advantages of light weight, low energy consumption, advanced control mode, reliability in operation, high demagnetization speed and good demagnetization effect.

Description

technical field [0001] The invention is a hysteresis buffer degausser for a pipeline port. It relates to the technical field of piping systems. Background technique [0002] At present, various methods are used to demagnetize the pipe port: 1) Appropriately change the position of the ground wire of the weldment; 2) Properly adjust the inclination angle of the electrode, and tilt the electrode toward the blowing direction; 3) Use the segmented de-welding method and the short-arc welding method; 4) Use AC welding instead of DC welding; 5) Place ferromagnetic materials that generate symmetrical magnetic fields, and try to make the ferromagnetic materials around the arc evenly distributed; 6) Reduce residual magnetism on weldments; 7) Use anti-degaussing method, That is, let the weldment generate an opposite magnetic field to offset the residual magnetism on the weldment; 8) Use a welding wire with a cross-section of 35-50mm to wind the steel pipe or two butt steel pipes, and w...

AI Technical Summary

Problems solved by technology

Although the two technologies have a certain degree of degaussing, the degaussing effect is not ideal.

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